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Related Experiment Videos

50 MHz rectifier based on an organic diode.

Soeren Steudel1, Kris Myny, Vladimir Arkhipov

  • 1IMEC, Polymer and Molecular Electronics, Kapeldreef 75, 3001 Leuven, Belgium. ssteudel@imec.be

Nature Materials
|July 26, 2005
PubMed
Summary

Organic semiconductor research advances passive radio-frequency identification (RF-ID) tags. A novel pentacene diode rectifier demonstrates high-frequency operation, achieving 50 MHz and nearing ultra-high frequencies.

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Area of Science:

  • Materials Science
  • Electrical Engineering
  • Organic Electronics

Background:

  • Organic semiconductors are researched for passive radio-frequency identification (RF-ID) tags.
  • Current prototypes operate at 125 kHz, but commercial viability requires 13.56 MHz compatibility.
  • Low charge carrier mobility in organic materials has limited high-frequency applications.

Purpose of the Study:

  • To develop an organic rectifier capable of high-frequency operation for RF-ID tags.
  • To overcome the limitations of low mobility in organic semiconductors for high-frequency applications.

Main Methods:

  • Fabrication of a rectifier utilizing a pentacene diode.
  • Testing the rectifier's performance in rectifying alternating current (a.c.) signals at various frequencies.

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  • Characterization of rectified voltage output relative to input a.c. voltage amplitude.

    • Main Results:

    • The pentacene diode rectifier successfully rectified an incoming a.c. signal at 50 MHz.
    • At 14 MHz, a rectified voltage of 11 V was achieved with a 36 V peak-to-peak input amplitude.
    • The study estimates that organic diodes could potentially operate within the ultra-high-frequency band (around 800 MHz).

    Conclusions:

    • Pentacene-based organic diodes show promise for high-frequency rectification.
    • This advancement could enable organic RF-ID tags to operate at commercially relevant frequencies.
    • Further research may extend the operational frequency limits of organic electronic devices.